SN74AHC1G126DBVR from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OE	input	Output Enable. Active-high 3-state control input. When OE is high, the Y output follows the A input; when OE is low, Y is placed in a high-impedance state. CMOS input, V_IH min 1.5 V @ V_CC=2 V up to 3.85 V @ V_CC=5.5 V.
2	A	input	Data input A. CMOS logic input passed to the Y output when OE is high. Input leakage ±1 µA max; V_I range 0 to 5.5 V.
3	GND	power_in	Ground reference (0 V) for the device.
4	Y	tri_state	3-state buffered output. Drives ±8 mA at V_CC=5 V (±4 mA at 3.3 V). High-impedance when OE is low; off-state leakage I_OZ ±2.5 µA max.
5	VCC	power_in	Supply voltage. Recommended operating range 2 V to 5.5 V. Quiescent supply current I_CC ≤ 10 µA max.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-5
Category	Logic
Pins	5

Ordering variants

Same part, different packaging or reel option.

SN74AHC1G126DBVR
SN74AHC1G126DBVRDBVT
SN74AHC1G126DBVRDCKR
SN74AHC1G126DBVRDCKT
SN74AHC1G126DBVRDRLR

CAD (KiCad official)

Symbol: SN74AHC1G126DBVR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74ahc1g126dbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`sn74ahc1g126dbvr-etched.step`	2.4 MB	You want the part with `SN74AHC1G126DBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 618 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (27 pp, sha256 6824188e88dcff51, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF